Results 1 to 6 of 6

Thread: How do you set the Network Card MTU for Jumbo Frames?

  1. #1

    Default How do you set the Network Card MTU for Jumbo Frames?

    How do you set the MTU on the network card for Jumbo Frames? The MTU drop drown only goes to 1500 which is far from the Jumbo frame rate of 9000. If I type 9000 in will it blow anything up?

    Sorry...I'm new to Linux so be gentle.

    Joe

  2. #2

    Default Re: How do you set the Network Card MTU for Jumbo Frames?

    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA1

    Something like:

    > sudo ip link set dev eth0 mtu 9000


    I tried this once a while ago and my laptop, while plugged into a gigabit
    network, would only allow me to go to 7K-ish frames. Never bothered to
    figure out why, but there you go. This setting is likely not permanent so
    from there you probably need to somehow use Yast (or modify
    /etc/sysconfig/network/ifcfg-eth0 or whichever file) to have the MTU in
    there. This is all assuming your segment can handle these frames and it
    is in your best interest to allow them.

    Good luck.





    On 05/13/2011 02:36 PM, jcavallaro wrote:
    >
    > How do you set the MTU on the network card for Jumbo Frames? The MTU
    > drop drown only goes to 1500 which is far from the Jumbo frame rate of
    > 9000. If I type 9000 in will it blow anything up?
    >
    > Sorry...I'm new to Linux so be gentle.
    >
    > Joe
    >
    >

    -----BEGIN PGP SIGNATURE-----
    Version: GnuPG v2.0.15 (GNU/Linux)
    Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

    iQIcBAEBAgAGBQJNzaDpAAoJEF+XTK08PnB5UcgP+gNEkdxi8nA+BcEuiqxYh1A4
    jsXbKY9lNeXinmCeSsCGywIpOsgp246rF/zKYKkw/7uIz2b0X6dJn1KMIY1g0/uM
    tHNTu4YPPQULIJfVvVo62CJJ1JQ7ocYP67DK2C296IYM3jysJ2A4xDkgWQEqluZW
    ysk/XnOFG3o5mPyQTyt1UN6T8cALaL/BAzD4Zvk36vcqvC61rv2uxIbR1ND1PaIs
    ofJA6h3IaTQh7KTC6HRSGYOa2BqqaNLP15K32RduMisoXNISIA5Q9OpHDiYfoE6G
    g5yGhWd3QK1+RwH2juEGrUIRoUdrm1rB493LhD2BTslCkls5GBUwnU+9JsJ/4yiZ
    NHhPjHdYjehcLu7ab1a4OHX4Ssk9wplYkaHu/nxrywEd7PAhxhWddWhbgTBbi8M7
    xplDBGd7D/4GJfhOYN1bTkutWXjateWmysrwwzNxLDPJTl7yXwIlrjWsA1VDpZNM
    b3KN+ZdzzeeG7o0PZiGVFIZ+iIgRHJ3EjtfFKB+F5FHYCX+H6Fsh4J57g+wAvakc
    ETDvmQpe6BF8dqZsxwiqZdH+PHtwaKh+EjONETLCALsPf8YmfgjZshj9d9CRGNiL
    nujl0FuMlrp8cObS6e7C+qAEcQo4zyEbGw3P2tUcumnmmQaKtJZQbWHdzXdj2xRx
    +LnnOINgx5kcrAzYm86c
    =qKmZ
    -----END PGP SIGNATURE-----

  3. #3
    Join Date
    Jun 2008
    Location
    UTC+10
    Posts
    9,683
    Blog Entries
    4

    Default Re: How do you set the Network Card MTU for Jumbo Frames?

    If you are using ifup, then the file to edit for eth0 is /etc/sysconfig/network/ifcfg-eth0 and you will find a MTU= line there.

  4. #4
    Join Date
    Nov 2009
    Location
    ND, USA
    Posts
    1,131

    Default Re: How do you set the Network Card MTU for Jumbo Frames?

    On Fri May 13 2011 06:36 pm, ken yap wrote:

    >
    > If you are using ifup, then the file to edit for eth0 is
    > /etc/sysconfig/network/ifcfg-eth0 and you will find a MTU= line there.
    >

    Joe;

    This file can be edited via YaST. YaST>System>/etc/sysconfig Editor. Expand
    Hardware, then network and then eth0.
    --
    P. V.
    "We're all in this together, I'm pulling for you." Red Green

  5. #5

    Default Re: How do you set the Network Card MTU for Jumbo Frames?

    Thanks Guys...I found it under /etc/sysconfig/hardware/network/eth0. I'm using 11.4 KDE Desktop....I don't know if that changed where I found it.

    Thanks
    Joe

  6. #6

    Default Re: How do you set the Network Card MTU for Jumbo Frames?

    Sorry one additional question. I have a set of bonded nic's in the machine as well. Do I set the MTU on the Bond, the NIC's, or Both?

    Joe

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •